Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8af6e7307e8d1fe…

MALICIOUS

PDF

16.5 KB Created: 2019-06-09 11:34:38 +01:00 Authoring application: mPDF 5.7
MD5: d50669149ca8710869a1845269397f0b SHA-1: cd8231281613eb6b00b893adf8efd8fe4722ddf4 SHA-256: e8af6e7307e8d1fe4410ca3143b39ef5116ef5d345bf6adac1b2d556c2edf1aa
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or traffic generation scheme. The ML classifier also flagged this PDF as malicious. While the specific intent beyond link distribution is unclear due to the lack of executable scripts, the sheer volume of links points to a malicious distribution or SEO poisoning tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://cefasfese.4pu.com/1738731738739732/A-Kiss-for-Emily-The-Emily-Stokes-Series-1-by-J-P-Galuska.pdf
    • http://cefasfese.4pu.com/4734739739731736/A-Kiss-for-Emily-Emily-Stokes-Series-by-J-P-Galuska.pdf
    • http://cefasfese.4pu.com/3737732734732738/Collected-Poems-of-Emily-Dickinson-Barnes-Noble-Classics-Series-by-Emily-Dickinson.pdf
    • http://cefasfese.4pu.com/3731734730731731/The-Importance-of-Being-Emily-Bad-Witch-The-Emily-Chronicles-1-by-Robyn-Bachar.pdf
    • http://cefasfese.4pu.com/2731736739731736/The-First-Kiss-of-Spring-Eternity-Springs-14-by-Emily-March.pdf
    • http://cefasfese.4pu.com/4734734739736737/Emily-Climbs-Emily-of-New-Moon-2-by-L-M-Montgomery.pdf
    • http://cefasfese.4pu.com/8734737738734738/A-Rose-for-Emily-The-Evening-Sun-Dry-September-Une-Rose-pour-Emily-Soleil-Couchant-Septembre-Ardent-by-William-Faulkner.pdf
    • http://cefasfese.4pu.com/4735738730732735/Emily-of-New-Moon-Emily-1-by-L-M-Montgomery.pdf
    • http://cefasfese.4pu.com/4739732730738733/Emily-of-New-Moon-Emily-1-by-L-M-Montgomery.pdf
    • http://cefasfese.4pu.com/6734737730739/Emily-s-Secret-Book-of-Strange-Emily-the-Strange-Graphic-Novels-2-by-Rob-Reger.pdf
    • http://cefasfese.4pu.com/7731733731730738/Wuthering-Heights-By-Emily-Bront-amp-Illustrated-An-Audiobook-Free-by-Emily-Bront-.pdf
    • http://cefasfese.4pu.com/3736739730736730/Collecting-the-Constellations-The-Antiquities-Series-1-by-Emily-Steers.pdf
    • http://cefasfese.4pu.com/1739735734732731/Emily-Sparkes-and-the-Friendship-Fiasco-Emily-Sparkes-1-by-Ruth-Fitzgerald.pdf
    • http://cefasfese.4pu.com/4739737735735736/Emily-Sparkes-and-the-Competition-Calamity-Emily-Sparkes-2-by-Ruth-Fitzgerald.pdf
    • http://cefasfese.4pu.com/1731739736736731739/The-Inventor-Penny-Green-Series-Book-4-by-Emily-Organ.pdf
    • http://cefasfese.4pu.com/1731739736736735739/Sins-of-the-Father-Runaway-Girl-Series-3-by-Emily-Organ.pdf
    • http://cefasfese.4pu.com/2731733739736735/A-Mother-s-Love-short-story-1-in-Emily-series-by-Chantal-Bellehumeur.pdf
    • http://cefasfese.4pu.com/2737730735737738/Growing-Pains-The-Autobiography-of-Emily-Carr-by-Emily-Carr.pdf
    • http://cefasfese.4pu.com/7733736730730737/Emily-Knight-I-am-Awakened-Emily-Knight-2-by-A-Bello.pdf
    • http://cefasfese.4pu.com/3736737731732/The-Tail-of-Emily-Windsnap-Emily-Windsnap-1-by-Liz-Kessler.pdf

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